PhoneRider USB

Product availability update.  As of June 1, 2007 ExceleTel has a very limited quantity of MediaPhonics PhoneRider ISA boards available for sale.  These are most appropriate for current users with legacy application needs.  Please call us at +1(919)233-2232 or email us for assistance.

Transitioning to a new device.  ExceleTel can help make your transition to a new voice telephony platform as fast and easy as possible. Please contact us for assistance.

Please note that MediaPhonics, the manufacturer of the PhoneRider product line, has ceased operations.  The information below is provided as a courtesy.  

PhoneRider® USB introduces a new level of serviceability and ease of use to computer telephony (CT). Base on the industry standard Universal Serial Bus (USB) specification, PhoneRider USB simply plugs into the USB port on a PC, and hardware set-up is complete. It eliminates the need to open the computer to install internal cards.

PhoneRider® Firmware

Phonerider® Firmware runs on the board's DSP freeing the CPU of the host PC for other tasks. It has three main modules:

  • call progress analysis
  • signal processing
  • echo cancellation

Call Progress Analysis
As the call progresses, Handset on/off hook, DTMFs, Dialtone, Ringback, Connected, Caller ID, Silence, Voice, Busy, fax/modem, SIT events and tones are detected..

Echo Cancellation
PhoneRider® is equipped with three independent device-specific echo cancellation algorithms for each of the Telephone line, Handset and Speaker phone.

PhoneRider® Drivers

PhoneRider® is shipped with it's own Telephony Service Provider (TSP) and Wave driver.  These two drivers provide access to PhoneRider® hardware functions through standard Microsoft application programming interfaces:

  • Telephone API (TAPI)
  • Wave API

All applications using these APIs (including TeleTools) will be operational with the PhoneRider USB board.


  • Dynamic media streaming architecture and full duplex DSP environment
  • Superior handset management
  • Professional headset support
  • Support of all TAPI functions including IP telephony
  • Full duplex speakerphone
  • Adaptive audio streaming
  • DTMF generation and detection
  • Caller-ID Detection
  • Call Progress Analysis
  • Loop current drop (wink disconnect) detection
  • SIT detection
  • Fax/modem detection
  • Scalable up to four ports (using a USB hub)

Technical Specifications

OS supported
Windows 98, Windows 2000

On-board Processor
Main Processor: Analog Devices DSP 2181

Host Interface
USB Rev. 1.1 (12Mbits/s)

Telephone Line Interface
Trunk type: 2 wire analog
Impedance: 600 Ohms (USA)
Ring Detection: 22 Vrms min./ 100max., 15 Hz min./50 Hz max.
Frequency Response: 300 to 3400 Hz +/- 3dB
Connector: RJ11 (4/6)

Telephone Set Interface
Impedance: 600 Ohms
Signal/noise ratio: 50dB
Frequency response: 300 to 3400 Hz +/- 3dB
On/Off-Hook detection: Current sense (10 mA - 24 mA)
Power Supply: 24V
Power Loss Emergency Switch: Bypass relay
Connector: RJ11 (4/4)

Peripheral Interfaces
Headset In
Headset Out
Speakers Out for amplified speakers

Microphone Input
Connector: Mono or stereo 3.5 mm jack socket
Input impedance: 600 Ohms
Maximum mic input voltage: 200 mV
Minimum mic input voltage: 10 mV
Microphone input gain: PhoneRider Automatic Gain Control
Echo cancellation: Auto-regulated

Speakers Interface
Line output impedance: 47 kOhms
Line output signal range: 1 Vpp

Compression and Sampling Rates
Format Type: PCM
Sample Rate: 8kHz, 11.025kHz, 22.05kHz, 44.1kHz
Bits per sample: 6 bits, 16 bits
Number of channels: mono, stereo

Form Factor
151 mm (W) x 195 mm (L) x 38 mm (T)

Operating temperature: 10º to 40º C
Storage temperature: 5º to 55º C,
Relative humidity 15% - 80%, non-condensing

Regulatory Certification
United States: Complies with FCC Part 15 Class B,
FCC Part 68, and UL1950 pending
EU mark

Examples of possible applications are:

  • Attended desktop PSTN and IP telephony
  • IVR / auto-attendant applications
  • Power dialing
  • Call logging
  • Telemarketing
  • Computer Aided Telephone Interviewing
  • Full-duplex Wave record and playback on- and off-line
  • Industrial facility and equipment monitoring
  • E-commerce solutions with vocal human interaction
  • and many more